Ah, Java Development Tools Launching Support is at 3.9.50.v2070925-1051 in that 
latest EPP build which might just not yet include the fix from the same day.

Von: cross-project-issues-dev-boun...@eclipse.org 
[mailto:cross-project-issues-dev-boun...@eclipse.org] Im Auftrag von Fred Bricon
Gesendet: Mittwoch, 4. Oktober 2017 16:04
An: Cross project issues
Betreff: Re: [cross-project-issues-dev] Oxygen.1aRC1: Maven fails with 
org.codehaus.plexus.classworlds.launcher.Launcher when running with JDK 9

I'll see if I can workaround it on m2e's side for RC2. Not promising any 
miracles though.

Fred

On Wed, Oct 4, 2017 at 9:55 AM, Arthur van Dorp 
<arthur.vand...@bsi-software.com<mailto:arthur.vand...@bsi-software.com>> wrote:
Thanks. Didn’t come up in my bugzilla searches as it is marked fixed.
Doesn’t seem fixed to me.

Regards
Arthur

Von: 
cross-project-issues-dev-boun...@eclipse.org<mailto:cross-project-issues-dev-boun...@eclipse.org>
 
[mailto:cross-project-issues-dev-boun...@eclipse.org<mailto:cross-project-issues-dev-boun...@eclipse.org>]
 Im Auftrag von Fred Bricon
Gesendet: Mittwoch, 4. Oktober 2017 15:48
An: Cross project issues
Betreff: Re: [cross-project-issues-dev] Oxygen.1aRC1: Maven fails with 
org.codehaus.plexus.classworlds.launcher.Launcher when running with JDK 9

You've hit https://bugs.eclipse.org/bugs/show_bug.cgi?id=522333

On Wed, Oct 4, 2017 at 9:26 AM, Arthur van Dorp 
<arthur.vand...@bsi-software.com<mailto:arthur.vand...@bsi-software.com>> wrote:
Hi all

As the RC2 window already closes and the final Oxygen.1a contributions are due 
soon, I bring up the following issue directly on this list:

On the EPP RC1 with only a JDK 9 as installed JRE, calling Maven commands fails 
with
Error: Could not find or load main class 
org.codehaus.plexus.classworlds.launcher.Launcher
Caused by: java.lang.ClassNotFoundException: 
org.codehaus.plexus.classworlds.launcher.Launcher
Switching to a JDK 8 resolves the problem.

Steps to reproduce:
*New workspace
*File/New Other…/Maven/Maven Project/Create dummy project
*Select project folder/Right click/Run As…/Maven clean

I’ve reproduced this under Windows 7 and the Scout EPP package. To make sure it 
isn’t a Scout issue I’ve tested with a post RC1 EPP package of Eclipse Java too.

Has anyone else experienced this? Is anyone else able to reproduce it?

Thanks and regards
Arthur


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